# Audio Compressor vs AI Note Quizzes

The clearest difference is update cadence: Audio Compressor at weekly against AI Note Quizzes's every 5 weeks. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Audio Compressor sells 1 one-off in-app purchase and AI Note Quizzes sells 6 in-app purchases, starting at $6.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Audio Compressor ships an update weekly, AI Note Quizzes every 5 weeks. The most recent releases landed on October 16, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Audio Compressor | AI Note Quizzes |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (251 ratings)](https://appshunter.io/ios/app/audio-compressor-mp3-shrink/id6449499993/reviews)** | — |
| Number of ratings | **251** | — |
| Positive reviews | 55.6% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Every 5 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 19 MB | 101 MB |
| Requires iOS | 15.6 | **15.1** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Arthur Eduardo Skaetta Alvarez Desenvolvimento de Software LTDA.](https://appshunter.io/developer/867175889) | [Garrison Whipple](https://appshunter.io/developer/1012298610) |

## What reviewers say

### Audio Compressor

[App page](https://appshunter.io/ios/app/audio-compressor-mp3-shrink/id6449499993)

Reduce audio file sizes without sacrificing sound quality. This app offers efficient compression, allowing you to reclaim storage space on your device. Easily compress audio from files or videos with offline processing.

**Highlights:** Efficient audio compression, Reduce file sizes without quality loss, Compress audio from files or videos, Fast and easy to use, Offline processing for privacy, Adjust bitrate and remove metadata

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Audio Compressor Premium | $0.99 | one-time |


### AI Note Quizzes

[App page](https://appshunter.io/ios/app/ai-note-quizzes-notebuzz/id6755409432)

**Features:** macOS Compatibility

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Premium | $6.99 | per 7 days |
| Monthly Premium | $9.99 | per month |
| Yearly Premium | $29.99 | per year |
| Yearly Premium | $39.99 | per year |
| Yearly Premium | $49.99 | per year |
| Yearly Premium | $59.99 | per year |


## Frequently asked questions

### Is Audio Compressor free?

Audio Compressor is free to download, with in-app purchases available.

### Is AI Note Quizzes free?

AI Note Quizzes is free to download, with in-app purchases available.

### Do Audio Compressor or AI Note Quizzes have ads?

Neither Audio Compressor nor AI Note Quizzes shows ads.

### Which is updated more often, Audio Compressor or AI Note Quizzes?

Audio Compressor ships an update weekly, and AI Note Quizzes every 5 weeks. Most recently, Audio Compressor was updated on October 16, 2026 and AI Note Quizzes on October 6, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*